Re: Convert 175 to 172

Colin,
this idea poses a lot of serious questions. remember that the O-300 is only 145 hp at the redline rpm with the fixed pitch prop. the 175 with the GO-300 and constant speed prop was 175 hp at the redline which you had available during takeoff. what are the differences in the basic empty wieght of both airplanes?. what model and serial number of 172 did the engine and prop come from? is the 175 going to be on floats? if not then the prop will be too long for use on the land plane. what is the difference in the wieght between the O-300 with the fixed pitch prop and the GO-300 and the constant speed prop and the different controls. how is this going to effect the W&B?
these are a few of the things that need to be answered to determine the feasibility of such a venture. what is wrong with simply overhauling the GO-300 in the 175?
mark

Re: Convert 175 to 172

I would stick to the 172 series for thst engine. The 175 is on a different type certificate and O-300 data is probably not precedented elswhere. I could be wrong, but it may take a nice run-around with the feds.

GO-300's with mid time firewall forwards can be found around $6,000 if you look hard enough. In fact, I new of one a few weeks ago.

The 175 with a GO-300 back in it only needs your IA signoff and your on your way again..